3Com MSR 30, MSR 20, MSR 50 manual LEDs on SIC-1SAE panel

24CHAPTER 2: SMART INTERFACE CARDS

Table 3 Interface attributes of the SIC-1SAE

	Description
Attribute	Synchronous		Asynchronous
Cable	V.24 (RS232) DTE cable
	V.24	(RS232) DCE cable
	V.35	DTE cable
	V.35	DCE cable
	X.21	DTE cable
	X.21	DCE cable
	RS449 DTE cable
	RS449 DCE cable
	RS530 DTE cable
	RS530 DCE cable
Supported service	1) DDN leased line		1)	Dialup through modems
	2) Terminal access service		2)	Backup
			3)	Asynchronous leased line
			4)	Terminal access

Interface LEDs SIC-1SAE panel is shown in the following figure:

Figure 7 SIC-1SAE panel

Description of the LEDs on SIC-1SAE panel is given in the following table:

Table 4 LEDs on SIC-1SAE panel

LED	Description
LINK	OFF means no link is present;
	ON means a link is present.
ACT	OFF means no data is being
	transmitted or received;
	Blinking means data is being received
	or/and transmitted.

Interface Cable The SIC-1SAE uses a synchronous/asynchronous serial interface cable with DB-28 connectors for connection.

Before connecting to a port on the SIC-1SAE, confirm the line properties of the interface to select an appropriate cable from the following cable options:

■V.24 (RS232) DTE cable: DB-25 (male) connector at the network end